Knockout axle assembly



1960 H. UEBING 2,950,934

KNOCKOUT AXLE ASSEMBLY Filed Aug. 1, 1957 2 Sheets-Sheet l Aug. 30, 1960H. UEBING 2,950,934

KNOCKOUT AXLE ASSEMBLY Filed Aug. 1, 1957 2 Sheets-Sheet 2 ilnitedStates Patent i KNOCKOUT AXLE ASSEMBLY Heinrich Uebing, Lintorf, Bez.Dusseldorf, Germany, assignor to Friedrich Kocks G.m.b.H., Dusseldrof,Germany Filed Aug. 1, 1957, Ser. No. 675,679

Claims priority, application Germany Aug. 6, 1956 2 Claims. (Cl. 287-53)In some stands for universal rolling mills, for example tube reducingrolling mills, with passes formed by two or more rolls, all the rollsare driven from a single driving shaft through bevel gear wheels. Therolls are fixed to axles on which they are supported by being forcedagainst shoulders on the axles and both ends of the axles are carried inbearings one on each side of the roll. Dismantling of these rolls isvery complicated; it can, in practice, only be done by removing thebevel wheels and dismantling the bearings also.

Dismantling of the rolls of such stands is considerably simplified bythe arrangement, in accordance with the invention, wherein the bevelgear wheels mounted on the axles have hubs carried in one of thebearings and the bevel wheels and the rolls are clamped together bymeans connected to the axles so that the drive is transmitted from thebevel wheels to the rolls, the axles being removable axially from withinthe hubs, rolls and bearings when the means are released from the axles.Because the bevel gear wheels are clamped to the rolls on the axles, andhave hubs carried in the bearings the formation of the pass isconsiderably simplified and it is possible to exchange the rolls withoutmoving the bevel gear wheels from their positions in the bearings of theaxle.

Preferably the rolls are mounted on conical seatings on the axles andthe thrust between each bevel wheel and the corresponding roll istransmitted through a ring which is detachably fixed to the hub of thebevel Wheel and which bears against the roll and the means for clampingeach bevel wheel and roll together includes a spring interposed betweenan end cap on the axle and the bevel wheel. region where the rolls aremounted ensures a satisfactory connection between the axles and therolls at all times, because of the wedge action produced. The rings mayalso bear against the end faces of the bearings The conical seatings onthe axles in the in which the hubs are carried and so prevent axialdisplacement of the bevel gear wheels and rolls and the springsconstantly press the bevel gear wheels against the rolls.

Two examples of stands constructed in accordance with the invention eachhaving three rolls are illustrated in the accompanying drawings inwhich:

Fig. 1 is a diagrammatic front elevation of the assembly of the rollsand the driving shaft;

Fig. 2 is a longitudinal sectional detail of one of the rolls shown inFig. 1 with its driving bevel gear, axle and bearings;

Fig. 3 is a diagrammatic front elevation of a modified assembly of therolls and the driving shaft in which the rolls are carried on conicalseatings on the axles; and

Fig. 4 is a view similar to that of Fig. 2 but of one of the rolls shownin Fig. 3.

Referring to the examples shown in both Fig. 1 and Fig. 3, a motor,which is not shown, of the rolling mill, drives a shaft 1 situated abovethe axis of a pass K.

2,950,934 Patented Aug. 30, 1960 ice The shaft 1 is mounted in bearings2 and 3, and in turn drives a roll 4 carried on it. Rolls 5 and 6 aredriven through pairs of bevel wheels 7,8 and 9,10 respectively, whichare mounted respectively on an axle 13 carried in bearings 11 and 12,and on an axle 16 carried in bearings 1'4 and 15. The rolls 4, 5 and 6are arranged at degrees to each other and together form the pass K.

In Fig. 2 the roll 5 mounted on its axle 13 is shown together with thebevel gear wheel 8 which is also mounted on the axle 13. The arrangementof the rolls 4 and 6 is similar.

The roll 5 can be exchanged without dismantling the bearings 11, 12 orthe bevel wheel 8 by loosening a bolt 17 which has a flange 19 at somedistance from the end 18 of its thread and which clamps a cap 22 againstthe bevel wheel-8. The flange 19 bears against a ring piece 20 with ashoulder 21 which is screwed into a recess in the axle 13. The axle 13is thus firmly connected to the end cap 22 by means of the bolt 17, 18and the end-cap 22 is clamped against the wheel 8 and the roll 5 isclamped between the wheel 8 and a collar 18' on the axle 13. A hub 23 ofthe bevel gear wheel 8 is carried in the bearing 11 of the axle 13 andbears against the side of the roll 5.

When the bolt 17 has been removed the axle 13 can be withdrawn axiallydownwards and the roll 5 removed. The bevel gear wheel 8 remains inplace.

-In the modification shown in Fig. 3 and Fig. 4, the axle 13 has acone-shaped seating 24 on which the roller 5 is mounted. A cup spring 26is disposed between an end cap 25 and an internal shoulder on the bevelwheel 8. This spring presses the bevel wheel 8 towards the roll 5 andcauses a detachable intermediate ring 27, which is screwed onto the hub23 of the bevel wheel 8, to be clamped against the side of the roll 5.means of a recess in the intermediate ring 27, suflicient clearance isprovided between the side of the roll 5 and the end of the hub 23 toensure that the roll 5 is pressed fully onto the conical seating 24 toprevent axial displacement of the roll 5 on the axle 13. With thearrangement shown in Figs. 3 and 4, the roll 5 can be removed in asimilar manner to that used with the arrangement shown in Figs. 1 and 2.

I claim:

1. An axle assembly comprising in combination a knockout axle, a collaron one end of said axle, an inwardly threaded open recess at the otherend of said axle, a central longitudinal bore extending through saidaxle into said recess, a member removably mounted on said axle adjacentsaid collar, a bevel gear having a hub portion rigidly mounted on saidother end of said axle and adjacent said member, a hollow, externallythreaded ring piece received in threaded engagement with said recess andhaving an inwardly directed shoulder, a bolt extending through said boreand said recess, and provided at its threaded end with a flange whichbears against said shoulder, an end cap in threaded engagement with saidbolt, and adapted to bear against said bevel. gear, whereby by removingsaid bolt, said knockout axle and the member may be withdrawn while thegear remains in place.

2. In an axle assembly according to claim 1, a conical seat on the axlesupporting the member, a ring detachable fixed to the hub of the bevelgear in contact with the member and adapted to transmit thrust betweensaid bevel gear and said member, and a spring interposed between thesaid end cap on the said axle and the said bevel gear adapted to clampthe bevel gear and member together.

(References on following page) References Cited in the file of thispatent UNITED STATES PATENTS Tuckwood Sept. 11, 1888 Solem Mar; 18, 1913Masury June 22. 1915 Dronsfield Aug. 1, 1916 Gierding Jan. 2, 1917Foster June 28, 1921 Muller June 21, 1932 10 ,789, 50

Kuhns Jan. 3, 1933 Fitzgerald et a1. Aug. 22, 1933 Long Aug. 25, 1936Inslee Oct. 5, 1937 McLaughlin Oct. 25, 1938 Taylor Feb. 13, 1940 StuartJune 22, 1943 Bannister Nov. 13, 1951 Friedman Apr. 7, 1953 'ProperzlApr. 23, 1957

